We are aproaching the end of this tutorial, the final material is the easiest one. Choose another new material in the material editor and make it a "blend" material and rename it to "base 3". For the material 1 we are going to create a new material so go into the material 1 options and rename this material; call it "foam".

This material is going to be a standard blinn shader, change the specular level to 52 and the glossineess to 25; for the difuse color map choose "falloff". Color for it will be: A) R:180 G:189 B:192 ; B) R:255 G:255 B:255

Click the "go to parent" button and change the bump map value to -99. For this bump map choose a "smoke" map and just change the size of it to 20 then return to the base material by clicking the "go to parent" button twice.

For the Material 2 of this blend we are going to copy the "base 2" material that we made before as an instance, just drag it!
To complete this tutorial we just have to choose the mask for this blend material. It will be a "smoke" map again.

Select "smoke", turn on the animate button and go to the first frame of your animation, change the size value to 16.0 and the phase value to 0.1 then go to the final frame and change the size value to 19.0 and the phase value to 5.0 and just invert the color of this smoke map by clicking on the "Swap" button.

Thatís it, now apply the material to the surface and render it! You can apply the sunset image as the background.
If you choose another background image just remember that you must also use it for the reflection map, too.